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Due to the inherent intersymbol interference (ISI), the detection for faster-than-Nyquisy (FTN) signaling is long considered to be a challenging problem. In this paper, we study three equalization and detection schemes in terms of their performance and computational complexity for FTN signaling system. The first one is the widely employed optimal maximum a posterior (MAP) equalization implemented...
An optical wireless personal area communication system supporting multiple users is experimentally demonstrated based on 16-CAP modulation combined with TDM. Error-free communication is achieved with 10 Gb/s data rate for up to 10 users.
An optical wireless personal area communication system is experimentally demonstrated based on 16-CAP modulation combined with TDM for multi-user function. 4 Gb/s data transmission with an average BER< 10−4 for up to 10 users can be achieved at 2 m distance.
We report the field trial of 480 Gb/s polarization division multiplexed (PDM) 16-quadrature amplitude modulation (QAM) on a single carrier (SC). Transmission over dark fiber and 100-GHz DWDM deployed link, under live traffics, is achieved for both high-loss, i.e. >30 dB, network configurations. Furthermore, a single carrier 256 Gb/s transmission is demonstrated over 50-GHz grid deployed network...
In this paper, we propose and experimentally demonstrate reconfigurable card-to-card optical wireless interconnects architecture with 16-Carrierless-Amplitude/Phase modulation. Results show that 3×40 Gb/s interconnection is achieved with 2 mW transmission power.
The linear induction motor (LIM) drives using conventional direct thrust control (DTC) schemes have drawbacks of large thrust ripples in low speed range and so on. In this paper, the thrust ripples of the DTC-based LEVI drives are theoretically analyzed. A novel switching scheme using synthesized voltage vector and magnitude modulation method is proposed to replace the conventional switching table...
A real-time software simulator of wideband HF (high frequency) channel model is presented. Using the tapped delay line structure of narrowband Watterson model, the delay power profile of the wideband HF channel model is sampled into discrete points, dividing each propagation path into series of sub-paths. The deterministic phase function and stochastic modulation function is applied. The sum of all...
Bit-error-rate free performance of 160 Gbit/s OTDM data based on 1.9 ps 40 GHz optical pulses generated by simultaneous two-arm modulation of a Mach-Zehnder intensity modulator has been demonstrated.
DC-DC converters are required to supply various levels of voltages from batteries to different systems. In order to extend the lifetime of battery, it is very important to optimize the efficiency of the DC-DC converter, especially the light load efficiency. In this paper, considerations of the efficiency variation of a PWM synchronous buck-boost converter are made to minimize the power loss. Several...
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